Floor construction.



I. KAHN.

FLOGR CONSTRUCTION.

APPLICATION FILED SEPT. 30. |915.

Patented Dec. 18, 1917.

2 SHEETS-SHEET I.

v f l I l l l l. KAHN.

FLOOR CGNSTRUCTION.

`f'nmcnlfm man sEPT. so. .1915.

Patented Des. 18, 1917.l

Fl'UIl'iI'S HAHN, 0F YOUNGSTOWN', OHIO, ASSIGNOR T0 TRUSSE) CONCRETE STEELl COMPANY, OF DETROIT, MICHIGAN, A CORPORATION OF MICHIGAN.

i Specilcaton of Letters Patent.

FLOOR CONSTRUCTION.

Patented ec.. 1S, ii'l To all whom it may concern.- .l

BG lt kIlO'Wll I, JULIUS KAHN al 01th zen of the United States, residing at vYzoungstown, in the county of Mahoning and State of Ohio, have invented new and useful Floor Constructions, of which the following 4 is a specication.

This invention has reference to a metalconcrete or reinforcedy concrete iioor .construction, and'among its important features are the following troughs, preferablyof ressed metal, (that constitute both carrying members and forms and are of sullicient length and stiffness to span the space between the loorbeams and to support 'the dead weight of the construction) together with a .filling 'of reinforced concrete, byk lwhich is produced a very inexpensive con, struction capable of carrying both dead and live loads; flanges orflat surfaces forming the `upper, and lower faces of thetroughs and having tangs struck therefrom by which metal reinforcing or lath for the floor slab i I j and ceiling may be conveniently secured in position; ribbed metal lath extending across the upper surfaces of the troughs, said lath v having the portions thereof between the ribs cutaway above the troughs to allow the concrete filling to be readily poured or shoveled into the troughs and at the same Atime topreserve an elfective metallic connection between the portions of the lathing l .on opposite sides of a given trough, said ribs, when Athe lath is connected to the anges of the trough, also vbracing the trough against lateral ilexure; in combination lwith the concrete lied troughs and theV door slabs constructed as stated, continuity l Il@ showing the general relation of parts in one embodiment of my invention. fFig. 2 is a section on the line 2-2 of Fig. l. Fig. 3 is a section on the linel 3--3 of Fig. 1. Fig. 4 isa perspective View of one of the troughs. Fig. 5 is a plan view showing the manner of cutting the ribbed metal lath or reinforcing member over the girders. Fig. 6 is an end view'corresponding thereto. Fig. Z isa perspective view of the end of a trough with one of the nailing strip supports in posltion. Fig 8 is a plan View showing the manner of slitting the blanli to form the support. Figs. 9 and 10 arel perspective i views showing modified forms of clips. Fig.

11 is a plan View of a blank slitted to form another modified support. Fig. 12 is an end view of the clip bent from the blank shown in Fig. 11.

' Similar reference characters refer to like parts throughout-the several views.

., In the embodiment lof the invention shown, 1 and 2 indicate, respectively, spaced vioor beam 4 serves to connect the columns .2. It willbe understood that the invention is applicable to floors in which but one type 0f these columns and door beams are found; and ity/ill also be seen that the particular manner of reinforcing the columns l and beams 3, and the particular metal section incased inthe column 2 and beams 4 may be varied within wide limits. For purposes of illustration, I-beams 5 may constitute the main members of the beams e; and the beams 3 may be reinforced by the bars 6.

The necessary forms (not shown) are. of.

course, used in the construction of the door beams. v

When the forms are in place, spaced troughs, preferably of pressed sheet steel l(each of which includes a flat bottom 9, in-

clined or Haring sides 10, and outturned dat 'f flanges 11 from the edges of which the vertical stifening ianges 12 may depend) are Y arranged to rest thereon at one end, their opposite ends being carried on the angle -beams 5 at an intermediate point in, the depth thereof. The bottom 9 and flanges preferably have struck therefrom the lathholding tongues 15. While the troughs are shown perpendicular to the door beams and parallelto each other, they may be arranged diderently to suit special conditions. At the side faces of the lioor beams, the spaces between adjacent troughs are closed by sheet metal cap-plates 16 and 17 of suitable shape,

iron lshelves 14 which are secured' to the said plates being secured to the troughs in any desired` manner; Aand between the cap plates, the troughs are covered by metal lath which includes the folded spaced ribs 18 that extend perpendicularly to the troughs and are connected by the relatively dat slashed body portions 19.y Where the lath passes overthe troughs the body portions are cut away as indicated at 20 in Fig. 5, the ribs, however, being retained.

One or more `reinforcing bars 22, preferably having shear members 23, is placed in each of the troughs before the metal lath is laid in place, the ends of these bars extending into the floor beams to form anchorages; and continuity reinforcing bars 25 eX- tend across the upper portionsv of the floor beams and terminate on either side at points The various members being in posion,

the concrete may be readily poured to coin- -plete the ioor beam, joists and slabs, as is obvious, (the cap plates 16-17 serving to exclude the concrete from between the trough the trough, said trough being filled with members) after'which the ribbed metal or other ceiling lath 34 may be secured in position by the tangs and covered with plaster 35. y

The nailing strip support shown in Fig. 9 diers from that heretofore described in that I the part 30 is extended and bent downwardly .at 36 along the flange 12, thus dispensing `'with the rivets 31'; and in Fig. 10 the same 'ithing is accomplished by slotting the Hanges 11 at 38 and inserting the division 39 of `the support (which corresponds to the part 31) therethrough. The support shown in Figs. 11 and 12 is formed by cutting clips 40 out from the inclined brace portions 41 and slitting the lower ends of the latter' to form the relatively wide divisions 42 that rest on the y flanges 11 and the narrow portions 43 which correspond to the parts 3139. l

To repeat: The ribs 18, when extended over and attached to the flanges of. the

trough, have a double function in that they` not only form a continuous reinforcement across the trough but also greatly stiiien the ianges 11 thereof against lateral flexui'e. Consequently the troughs may be made of very thin metal (preferably pressed) of strength substantially only that required to sustain the dead load of construction, which, since the trough acts both as a form for and a reinforcement of the concrete filling, results in a great saving of expense.V rfhe bars 25 in effect render the joists continuous over the door beams, from which it follows that a further reduction in the cross section of the joists is secured. The nailing strip supports are also economical vin that they are easily made and set in position, and also in against any tendency to bulge.

While the invention is of primary iinportance in connection with floors, it is clear that certain of its features are applicable t'o walls and the like; and it is also clear that many changes may be made in the details of .the Various embodiments thereof.

I do not, therefore, wish to be limited otherwise 'than as indicated by the 'subjoined claims.

' Iclaimz-- f v 1.` structure comprising a trough having an open side, metal lathing extending across the open side and being secured to and supported bythe trough, said lathing comprising spaced ribs and retioulated body portions alternating with each other, the

-ribs extending continuously transversely across the trough, each end of the ribs being integral with the corresponding body por- -tion of the lathing, parts of said body portions being removed at points where the lathing crosses the trough to form openings through which concrete .may be inserted into concrete to form a supportingmember and said concrete inclosin'g the metal lathing to form slabs on eitherside of the supporting member.

such manner that the ribs bond the partsv thereof together across the open side, whereby the trough is stiffened againstv lateral iexure, said trough being filled with concrete to form a supporting member and said concrete inclosing the metal lathing to form that they constitute tension members which y vreinforce'the upper portions of the joists los a slab or panel on one side of the supporting member.

3.A ioor construction comprising a plurality of spaced trough members having l rality open upper sides, metal lathing extending acrossl and *resting on the trough members, portions of said lathing above' the trough members-to form free openings through which concrete may be poured, other portions of the lathing extending unbroken. across the trough members, said trough members being filled with concrete to form floor joi'sts `and said concrete extending over and inclosing the metalv lathing to form slabs between the joists.

4. A Hoor construction comprising a pluof spaced trough members having flanges at their upper sides, 'said flanges having tongues struck therefrom, metal lathing extending across the'trough members and secured thereto by the tongues, portions of said' lathing being removed above the trough members to form free openings-through which concrete may be poured, other portions of the lathing extending un'- broken across the trough members, said trough members being filled with concrete to form oor joists and saidconcrete extending over and inclosing the metal lathing to form slabs between the joists.

5. A floor construction comprising a plurality of spaced trough members having open upper sides, tending across and resting on the trough members, the ribs of the lathing being arranged transversely ,'n respect to the trough .tions of the lathing extending unbrokenmembers, portions of said lathing bein removed above the trough members am? between the ribs to form free openings through which concrete may be poured, other poracross the trough members, said Itrough members being filled lwith concrete to form floor joists and said concrete extend-ing over and inclosing the metal lathing tovform slabs between the `ioists.

6.` A floor construction rality of spaced trough members erally extending sides, said fianges having tongues struck therefrom, ribbed metalA lathing extending across the trough members and secured thereto by the tongues, the ribs of`v the lathing being arranged transversely in respect to the'trough members, portions of said lathing bein removed above the trough memcomprising a pluhaving latbers to orm free openings through which concrete may be poured, other portions of the lathing extending unbroken across the trough members, said trough members being filled with concrete to form floor joists and said concrete extending over and inclosing the metal lathing to form slabs between the joists.

7. A floor construction comprising a plurality of spaced trough members having open upper sides, metal lathing extending across and resting on the trough members, portions of said lathing being removed above being removed ribbed metal lathing exflanges at their open upper `metal section,

the trough members to form free openings through which concrete may be poured,

other portions of the lathing extending v.

unbroken across the trough members, said trough members bein Ifilled with concrete to form floor joists auf? said concrete extending over and inclosing the metal-lathing to form slabs between the joists, reinforcing members extending longitudinally of the 'i trough members near the bottoms thereof, said trough members being of strength -suiflcient to support the dead loads to which the floor is subjected during erection and constituting a form for the concrete, and gether with the lconcrete fillings and. reinforcing bars being of strength suflicient to carry subjected at any time.

8. A Hoor, construction comprising a pair of spaced metal-'concrete beams, spaced sheet metal trough members extending between the beams and supported thereby, reinforcing vrods extending longitudinally of the trough members and having their ends embedded in the beams, ribbed metal lathing supported by the flanges on the trough members, the ribs extending' across the trough members, a portion of the rest of the lathing being removed over the trough members without severing. the ribs to'allow free pouring of concretev into thel trough .member and the trough members being filled with concrete, and said concrete extending to and inclosing the metal lathing to form slabs on each side of the troughs.

' 9. A fioor construction comprising a pair of spaced metal-concrete beams, spaced sheet metal trough members extending between the beams and supported thereby, lsaidV trough members having open ends and an open upper side, reinforcing rods extending longitudinally of the trough. members and the total'load to which the fioor having their ends embedded in the beams, I

" and sheet metal capplates extending across the lspace between. the sides of adjacent troughs to constitute form-elements forv the metal-concrete beams, and a concrete filling for the trough` members, said filling being monolithic with the concrete of the beams.

10. A floor construction comprising a beam formed of a metal section incased in concrete, shelf members projecting from the flanges extending laterally outwardly from the upper edges of the sides, a wooden nailing strip extending longitudinally of the for supporting the trough member, means a series of spaced sheet metalL the sides of adjacent no y . iis

nailing strip from the trough member, said means comprising a member having a een trai portion on which the strip bears, inclined end portions that extend downwardly :from the central portion to the upper inner edges of the sides of the trough members, said edges being split, one portion extending along the corresponding flange and the other extending downwardly along the inner face or the corresponding side of the trough.

12. A floor construction comprising a trough member having a flanges 'extending laterally outwardly from the upper edges of the sides, a wooden nailing strip extending longitudinally of the troughl member, nailing strip from means comprising tral 'portion on which tlte strip bears, in` clined end portions that extend downwardly from the central edges of the sides of the trough members, said edges being split, one portion extending along the corresponding flange and the other extending downwardly along the inner race of the corresponding side of the" trough, and clips struck upwardly at the ends of the central portion and embracing the sides of the nailing strip.

the trough meinber, said 13. A concrete Hoor construction compris1 ing a wooden nailing strip and a sheet metal 'support therefor, said support comprising a dat central portion on which the strip rests, clips at the ends of the central portion, said clips embracing the sides of the strip, divided end portions extending outwardly and downwardly from the, central portion, and sheet metal troughmembers upon the oppo site sides of which the end portions of the clips are respectively supportedo le. A. door construction comprising a thin metal trough having an open upper side through which a concrete lling may be in serted, the edges or' said trough being prou vided with oppositely extending lateral ldanges,

anailing strip disposed longitudifJ bottom, sides, and

means for supporting the` a member having a cen? portion to the upper inner 'the sides of the nailing strip,

.ously across centrally the trough, ai tension ineinoers extendingcrosswise oi the trough at intervals and connecting the upper edges thereof, said ten sion members including upwardly projecting clips that embrace the sides of the nailing strip9 said trough being iilled with con crete.

l5, A loor construction comprising a thin metal trough having an open upper side through which a concrete trilling may be inserted,'the edgesof said trough being pron vided Iwith' oppositely extending lateral Hanges, a nailing strip disposed longitudi-- nally and substantially centrally of f the trough2 and tension members extending crosswise oi the trough at intervals in broken1 convex lines, the upper portion ot the tension members forming seats for the nailing strips, said tension `members includ` ing upwardly projecting clips that embrace said trough being lilled with concrete, and said tension strips being embedded therein.

id A structure comprising a metal trough having an open upper side, said trough constituting a term for metal-concrete joist7 and metal reinforcing extending continu-Y said open upper side of the trough and supported on said trough, said reinitorc being open above the trough to allow e pouring concrete, said reinforcing also extending continuously on each side of the trough to constitute cora-a bined `icorms reinforcing for slabs, and concrete filling said trough and extending laterally therefrom over the combined slab reinforcing and forms to constitute shallow forcing andeasy welles increased strength of is largely avoided.

lin testimony L specil'icas tion., 

